Stamp-pad and manner of treating the same.



v J. F. SELLEGK, JR.

STAMP PAD AND MANNER 0F TREATING THE SAME.

APPLICATION FILED PEB.29,1908.

Patented Jan. 19, 1909.

INVENTOR Adz/001%.

BY m TTOBNEY 1H5 NORRIS PETERS cc., WASHINGTON, u. c.

IlNITEE STATES PATENT @FFICE.

STAMP-PAD AND MANNER OF TREATING THE SAME.

Specification of Letters Patent.

Patented Jan. 19, 1909.

Application filed February 29, 1908, Serial No. 418,518.

T 0 all whom it may concern:

Be it known that I, J OEL F. SELLEOK, Jr, a citizen of the United States, residing at Passaic, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Stamp-Pads and Manner of Treating the Same; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawings, and to figures of reference marked thereon, which form a part of this specification.

This invention relates to a rubber stamp ink pad commonly known to the trade as a stain pad, such as is used for supplying indelib e ink to rubber stamps and similar printed elements, and is designed to provide a cheaper construction from the stand-point of its manufacture, and to provide one that has none of the disadvantages of stamp pads as now manufactured.

As at present constructed the stamp pads are made with a block of wood whi h is coated on one side with a varnish, and this wood, to fit the tin box in which these stamp pads are usually placed, must be cut and planed to its xact size, and in addition to that, the scarcity of wood, which is increasing, makes the manufacture of the stamp )flClS expensive in comparison to what it has een.

The present invention is further designed to provide a block base for stamp pads which has not the fault of a wooden block, inasmuch as a wooden block, after it is penetrated by the ink, warps, and this warping is a serious defect in this class of goods, as it destroys the symmetry of the pad and also interferes with its usefulness.

The invention is illustrated in the accompanying drawing, in which Figure 1 is a view half in elevation and half in section of an improved stamp ad, and Fig. 2 is a detailed section of a modi 'ed form of block.

My improvement lies in making the base of the pad from a block 10 of card-board,

aste-board, news-board, straw-board, dobby ooard, peat-board or similar mixtures from pulp, and this block can be either a solid piece as in Fig. 1, or it can be made of laminated sheets 10" as in Fig. 2. These blocks .10 can be made of paste-board in the re- Y quired size, or if not to the size they are easily cut, and that require no planing or finishing and can be used as they come from the rolls, as far as the surfaces are concerned. I provide the top surface of this block with the layers 11 of felt and blotting paper, either in the dry state or saturated with ink, as is now customarily done in these pads, and the whole is covered and secured together by a fabric covering 12 which is fastened, preferably by glue, to the bottom edge of the block 10 as at 13 in Fig. 1. The present wooden block, as has been stated before, must be treated with a varnish or coating, and the block being very porous, and the ingredients, principally the glycerin commonly used in indelible inks, which glycerin is very penetrating, are soon absorbed by the wooden block which sometimes takes from the saturated felts and blotting paper sufficient ink to require the pad to be re-inked by applying fresh ink to the surface.

It is a well known fact that if any wood of the thickness required in the manufacture of stamp pads is subjected to moisture for any length of time, it will warp, and this is especially true in the case with the thin wood boards which form the blocks for stamp pads, when only one surface is subjected to the moisture in the ink charged felts and blotting paper. This matter of boards in the stamp pads warping has al rays been a difiiculty wlth which the manufacturer of a stamp pad has had to contend, and it has not been overcome, it being articularly noticeable in the larger size pac s. This warping of the block gives the stamping surface of the pads a convex surface, often loosens the fabric covering l2, and causes the pad to rest unevenly in the tin box in which it is placed. In extreme cases this warping causes the wood board to check and s lit. I have entirely overcome this difficulty in the improved pulp or paste-board block, and I have also argely overcome the disadvantage of the block absorbing the ink from the felts and blotting paper. To guard against the possible absorption of even a small amount of ink from the felts and blotting paper, I prefer to coat and in some instances impregnate the block 10 with a suitable compound to make the block proof against ink penetration, and I may use any of the usual water roofing or liquid resisting compositions, but have experimented however and have devised a mixture which excludes all ink, and particularly the glycerin, from the block, and this composition consists of four pounds of resin and one gallon of alcohol Which are simply mixed together, and then the block can be 5 either dipped or soaked therein, and this makes a block of card-board which is extremely durable and has a long life, and is not penetrated by the ink or any of its ingreclients.

10 Having thus described my invention, What I claim is 1. A base for stamp pads which is made non-Warping by being made up entirely of a cardboard block, which block is treated 15 With an ink-resisting compound.

2. A non-Warping base for a stamp-pad consisting of a block of card-board treated with a mixture of alcohol and resin.

3. A block for stamp pads consisting of card-board treated with a mixture consist- 2ting of resin and alcohol in the proportions of four pounds of resin to one gallon ofalcohol.

In testimony, that I claim the foregoing, I have hereunto set my hand this 26th day of February 1908.

JOEL F. SELLEOK, JR.

v/Vitnesses E. A. FELL, WMH. CAMFIELD. 

